zsohernig



(No Model.) 3 Sheets-Sheet 1.

- 11E. ZSGHERNIG.

00m F-REED LATGH.

No.- 502,898. Patented Aug 8., 1893.

WA/06 I a (No Model.) s SheetsSheet 2.

P. E. ZSGHBRN'IG] COIN FREED LATCH.

No; 502,898. Patented Aug. 8,1893.

(No Model.)

' v 3 Sheets-Sheet 3; F. E. ZSGHERNIG.

00m FREED' LATGH.

. H Patented 8, 1893. J? -67 g g9 1 ,63 9 'jf" j..- I. I 8 a a o UNITED STATES PATENT ()FFICE.

FRIEDRICH ZSCHERNIG, OF DRESDEN, GERMANY, ASSIGN OR TO AUGUST KARL MARIA HERMANN EVLER, OF SAME PLACE.-

' COIN-FREIED LATCH.

SPECIFICATION forming part of Letters Patent No. 502,898, dated August 8, 1893.

Application filed March 6, 1893. Serial No. 464.839. (1T0 model.) Patented in Germany J anuary 25, 1891, No. 60,587, and July 8. 1891, No. 62,436; in France March 28, 1891, No. 212,404, and in Austria-Hungary September 15, 1891, No. 15,636 and To all whom it may concern.-

Be it known that I, FRIEDRICH EDMUND ZSOHERNIG, a subject of the King of Saxony, residing at Dresden, Saxony, Germany, have invented certain new and useful Improvements in Coin-Operated Looks, (for which Letters Patent have been granted in Germany, dated January 25, 1891, No. 60,537, and patent of addition, dated July 8, 1891, No. 62,436; in France, dated March 28, 1891, No. 212,404, and in Austria-Hungary, dated September 15, 1891, No. 15,636 and No. 86,764,) of which the following is a full, clear, and exact description.

The object of this invention is to enable a door or the like to be'unlocked after theinsertion of a coin or equivalent. The latch or bolt is freed or released by the insertion of a coin, and may then be withdrawn to open the door by means of a handle operated from outside. In doing this, the coin which has been introduced is set free, and the coin-lever, adapted to arrest or look in position the said latch or bolt, is made to engage with the same again. To open the look from within, another handle is arranged to be operated from the interior. It is only necessary to turn this, to lift the coin lever out of engagement, after which the bolt or latch is withdrawn.

The characteristic feature of the improved lock is, that it comprises two handles, one of which enables the latch to be withdrawn from the outside after the coin lever has been freed by the insertion of the coin, while the other serves to open the lock from within without the insertion of a coin, and in moving, raises the lever out of engagement.

The invention will be best understood by reference to the accompanying drawings.

Figure 1 is an elevation of the lock with the cover or lid removed, and the mechanism in the closed or locked position. Fig. 2 is a horizontal section of the lock and door the position of the parts being the same as in'Fig. 1. Fig. 3 is a similar section of the look when opened or unlocked from the outside. Fig. 4 is an elevation similar to Fig. 1 but showing the'position of the parts while the lock is being opened from the inner side. The remaining figures illustrate a modification of the lock, Fig. 5 being aview of the closed lock with the cover removed; Fig. 6, a horizontal section of Fig. 5; Fig. 7 a similar view to Fig. 5 showing the look while it is being opened from the inside, and Fig. 8 is a side view of the coin-receiving cup'or dish.

Like letters indicate like parts in all fig ures.

A is the lock case.

A is the latch or bolt.

B is the coin-lever adapted to lock latch A in position; 0 the lever arm whereby the latch or bolt from the outside of the door is drawn into the lock casing, D being a similar lever arm for performing the same func-. tion from the inside'of the door.

E is a chute for the insertionlot the coin. The bolt or latch A is acted uponby the spring a, tending to retain it always in thef-closed or locked position. In both forms of look here shown, the latch A has a projection or shoulder a at its back or upper part, whereby it engages with the front end or nose'b of the coin lever B. The nose 1) drops into engagement either by the weight of the arm of B which carries it, or by the action of a spring I). Wis the pivot on which thecoin lever B turns. The coin inserted through chute E first drops into the dish or equivalent mounted on the coin lever B which dish or equivalent preferably'as. shown in Figs. 5 to 8 has the shape of a circular ring, conically contracting in the downward direction, so as to allow coins of smaller than the standard size to fall through without effect, while coins of the predetermined size are retained in the cup B and lift the nose I) out of engagement with shoulder a, after which it is only necessary to depress the externahhandle 0 attached to the tumbler O to withdraw the latch or bolt A; while this is being done a mechanism connected with the latch, releases the coin.

In the form represented by Figs. 1 to 4 the coin-dish consists of two parts, one of which, I) is rigidly connected to or formed integral with B, while the other b is connected with part b by a joint b Aspring b acting upon pin b tends to keep together the two parts, so that they jointly form one complete and substantially unbroken ring. The latch or bolt A carries a rod a on the back portion of which there is a wedge-shaped piece f. WV hen the latch or bolt is withdrawn this wedge f enters between parts Z2 and b and presses part b outward which has the eifect of ex panding or widening the cup B to an extent suflicient to allow the coin to fall through (Fig. 3).

In the modified arrangement shown in Figs. 5 to 8, the cup or dish B is adapted to turn on a spindle 6 provided on the lever B. A spring tends to retain the cup or dish in the horizontal position. Cup B carries a bent pin (Fig.8). By means of a link a the latch or bolt A is connected with a bell crank or bent lever a a pivoted at a and the arm a of which, when the latch is drawn back by the action of the lever arm 0 and its handle 0, is caused to engage with the pin 11 so as to upset or tilt over the coin-dish B as shown in Fig. 7, and in dotted lines in Fig. 8, and eject the coin, the tappet b in the meantime being above the projection a. The coin dish B whether arranged to open as in Figs. 1 to 4.- or to be tilted as in Figs. 5 to 8 for the purpose of releasing the coin, is (as illustrated in Figs. 4 and 7) acted upon in an identical manner when thelock is opened from within or without; only in the former case it, of course, throws out no coin.

To unlock the latch or bolt A from the in- 1 side, the incline a. of the latch (as shown in Figs. 1 to 4) is made to engage with a slide 9 provided with a corresponding incline, and resting upon the lever arm d of the spindle barrel D. A spring g is arranged to lower the slide when the handle d is released. Barthe incline a, the projection g or top of the slide 9 must raise nose 6 out of engagement with shoulder a. It will thus be seen that the lock may be opened at any time from within,

. combination of a latch or bolt, a locking lever In the form shown in Figs. 5 to 7, the openwithout the insertion of a coin.

ing operation from within is performed by the arm (Z of barrel D, the other arm (1 of which is connected by a link (Z with the lever d swinging on the pivot d which is se- 1 Before arm (1 cured to the lock casing. touches bolt A, the lever d, by engagement with a projection 12 on the coin lever B, lifts nose 2) outof engagement, so that here, too, 1 there is nothing to prevent the lock being i opened from within whenever required.

To enable the legitimate owner or occupier and other authorized persons to'open the look from the outside also, without the use of a 3. coin, a key hole 7L (Figs. 1 and 4) maybe pic I vided above the coin-leverB for the introduction of a suitable key the bit of which is j adapted to move the coin-lever out of engagement either directly or indirectly.

It will be understood that the details of the lock-mechanism may be varied without departure from the principle of the invention.

I claim and desire to secure by Letters Patcut- 1. In a lock of the character described,the combination, of a latch or bolt, alever adapted to engage with the same to lock it when projected outwardly, and to release the said latch when tilted, an arm and an operating handle therefor adapted to be operated to withdraw the latch when released, and a second arm and an operating handle for the same also adapted to be operated to tilt the lever and withdraw the latch, as and for the purpose specified.

2. In a lock of the character described, the combination of a sliding latch or bolt, a pivoted locking lever adapted to engage at one end the said latch to lock it when projected outwardly, and at its opposite end adapted to be acted upon by a coin to release the latch, an oscillating arm mounted upon one end of a spindle, an operating handle mounted upon the other end of said spindle and adapted to operate the said arm to cause it toengage the latch when released by the lever and withdraw it, a second arm mounted upon a spindle, and an operating handle mounted also upon said spindle and adapted to cause the said second arm to tilt the lever and withdraw the latch inwardly, as described.

8. In a lock of the character described, the combination of a latch or bolt, a lever adapted to engage at one end said latch to lock it when projected outwardly, said lever being also adapted to release the latch when acted upon by a coinan incline on said latch, a sliding bolt or arm also provided with an incline adapted to bear against the incline on the latch, said sliding bolt hearing at its upper end against the lever, and an oscillating arm adapted to operate the said sliding bolt to cause it first to tilt the lever and release the latch, and then to retract the latter, as and for the purpose specified.

t. In a lock of the character described, the

adapted to engage atone end with the latch to lock it when projected outwardly, an expansible coin-receptacle at the other end of the lever, means for tilting the locking lever to free the latch and for withdrawing the same inwardly, and means carried by the latch adapted to expand the coin receptacle to release a coin whensaid latch is withdrawn as described, for the purpose specified.

5. In a lock of the character described, the

ITO

lever, an inclined surface on the latch, an inclined surface on the sliding bolt adapted to engage with the incline of the latch, an arm mounted upon a spindle and adapted to raise the sliding bolt, an operating handle also mounted upon said spindle a second arm mounted upon a spindle and adapted to engage the latch to withdraw the same when r eleased by the locking lever, and an operating handle also mounted on the latter spindle, as and for the purpose specified.

In testimony whereof I have hereunto set my hand in the presence of the two subscribing witnesses.

FRIEDRICH EDMUND ZSCHERNIG.

Witnesses:

OTTO WOLFF, HUGO DUMMER,

Both of Dresden. 

